Portsmouth Rhode Island Weather Almanac  
Wednesday, March 22, 2023  
Clear early, Partly Cloudy Day to Mostly Cloudy & Light Rain PM, Continued Warm  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    March 22, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   55   53   47   +8   70   in 1948   28   in 1914  
Minimum Temperature   35   38   32   +3   52   in 2012   15   in 1956  
Average Temperature   45   46   40   +5   59   in 2012   25   in 1914  
 Month Avg Max Temperature   46.3   50.7   44.2   +2.1   51.9   in 2010   31.6   in 1916  
Month Avg Min Temperature   32.5   32.9   29.5   +3.1   37.0   in 2012   20.0   in 1916  
Month Average Temperature   39.6   42.1   37.1   +2.5   44.5   in 2012   26.0   in 1916  
High Heat Index                                      
Low Wind Chill   35   31   22   +13             1   in 1988  
Heating Degree Days   20   19   25   -5   40   in 1914   6   in 2012  
Month HDD   559   504   614   -55   857   in 1916   450   in 2012  
Season HDD   3869   4074   4440   -571   5499   in 1905   3674   in 2016  
Cooling Degree Days   0   #N/A   #REF!   #REF!   0   in 2023   0   in    
Month CDD                                 in    
Year CDD                                      
Maximum Dew Point   43   28   36   +7   58   in 2012   6   in 1988  
Minimum Dew Point   29   13   22   +7   51   in 2012   -5   in 2017  
Average  Dew Point   36   21   29   +7   55   in 2012   2   in 1988  
 Month Avg Max Dew Point   35.5   41.1   33.7   +1.8   42.2   in 2012   22.0   in 1960  
Month Avg Min Dew Point   23.5   22.5   18.9   +4.6   29.7   in 2012   6.4   in 1950  
Month Average Dew Point   29.7   31.8   26.6   +3.1   36.0   in 2012   16.4   in 1950  
Precipitation   .06   .00   .15   -.09   4.42   in 1980            
One Hour   .04   .00           1.21   in 1980            
Hourly Rate   .15   .00           .96   in 2019            
Month Precipitation   3.54   1.65   3.05   +.49   8.47   in 1983   .13   in 1915  
Year Precipitation   12.67   11.04   10.15   +2.52   19.24   in 1998   5.75   in 2012  
Snow   0.0   0.0   0.2   -0.2   6.4   in 1967       in    
Snow Depth   0   0           9   in 1956       in    
Month Snow   0.1   0.5   4.6   -4.5   27.8   in 1956   0.0   in 1947  
Season Snow   9.1   34.2   31.9   -22.8   75.0   in 2005   5.0   in 1998  
    March 22, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   92%   60%   85%   +7%   100%   in 2007   47%   in 1954  
Minimum Humidity   46%   22%   49%   -3%   91%   in 2010   20%   in 1989  
Average Humidity   69%   41%   68%   +1%   95%   in 2001   35%   in 1954  
Maximum Barometer   30.41   30.21   30.08   +00.33   30.74   in 2020   29.53   in 1995  
Minimum Barometer   30.22   30.00   29.72   +00.50   30.45   in 2020   29.12   in 1955  
Average Barometer   30.32   30.11   29.90   +00.41   30.50   in 2020   29.37   in 1983  
Average Wind   5.6   10.3   9.4   -3.8   20.9   in 1973   2.9   in 2010  
Direction   S   NW   NW       NE ESE
High Wind Gust   19   37   28   -9   49   in 1999   13   in 1975  
Direction   S   WNW   WNW       SE SE
Maximum Water Temp   43.9   45.1   41.0   +2.9   50.5   in 2012   36.1   in 2015  
Minimum Water Temp   42.3   43.3   39.3   +3.0   47.8   in 2012   34.9   in 2015  
Average Water Temp   43.1   44.2   40.2   +2.9   49.2   in 2012   35.5   in 2015  
Sunrise/ AM Twilight   6:45:21 AM   7:15:30 AM            
Sunset / PM Twilight   6:59:14 PM   7:28:04 PM            
Length Of Day   12:13:53                          
Special Conditions   None                              
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Hour-by-Hour Weather For March 22, 2023            
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